and the energy and the passion in giving doesn't necessarily continue. so we're seeing, and bill gates is a perfect example, bill and melinda decided their foundation will spend down within 50 years of their death. we're seeing more and more foundations use spenddown as a way to have more resources for today's problems, and focus dramatically on what they do. >> jeff, are there particular areas of need, or charity, that you would like to see increased entrepreneurship? anything that looks primed for innovation to you right now? >> yeah, the genius of american philanthro philanthropy, which leads the world by far, is number one volunteerism. number two, as an american industry, innovation. so i think we are seeing, in -- for example, education, dramatic change taking place in terms of charter schools, in terms of focusing on stem -- science technology, engineering and math. things that will transform american education, which will transform the american economy. >> that's a good point. and right now, across the country, you're seeing certain areas become